Bone, collar
A horizontal bone above the first rib that makes up the front part of the shoulder.</P> The collarbone, also called the clavicle, links the sternum, or breastbone, with the scapula, a triangular bone in the back of the shoulder.</P> The collarbone ends at the sternum, forming one side of the sternoclavicular joint.
It ends at the shoulder forming one side of the acromioclavicular joint.